I think that will be via SiimGuru live chat.
I’m hoping for the reveal of the last two or so Stuff Packs and maybe EP 11. Still too early for them to announce Sims 4, although if Maxis is working on it, I could see a slight mention that they are in full development and that’s it.

It could be anything an announcement on decades,universities,island time(? )future store worlds and the sims 4 and ofcourse Graham has already confirmed seasons will be mentioned with new content. Aliens?